While exploring the Castle of the Royal Sisters, Twilight and her friends discover an old chest locked away in one of the palace's many forgotten rooms.

What is this chest? Why did Celestia leave it there? And if you listen closely... is that the cry of a child from within? Twilight, ever curious at heart, abhors a question without an answer—she opens the chest.

In their pursuit to help whatever poor soul is trapped inside, the Mane Six discover a world of lingering shadows, traumatic memories, and terrible monsters roaming an endless maze of torment. And through it all, they find a scared, lonely little boy.

They must fight harder than they ever have before, or their souls may be the next secret the chest locks inside of its cold, dark reaches.

A 'Binding of Isaac' crossover, inspired by the game of the same name made by Edmund McMillen.

Story will update at least once every two weeks until finished.

Art by the amazing: Little Tigress

Proofreading and additional assistance by the equally amazing: Paracompact (Seriously, check out their work. They are a better writer than I could ever hope of being.)

Featured on: 1/29/23, 2/12/23, and 2/26/23. Thank you all for taking an interest.